THE RESULTS OF FIELD TESTS OF WEAK SOILS

Abstract

Organization of construction on sites built of weak soils is associated with certain problems, one of which is the construction of temporary roads and foundations for building mechanisms (pile drivers, cranes, etc.). Temporary roads necessary attributes of any construction, ensuring the availability of facilities and linear structures. One of the features of the temporary roads is their erection in accordance with the staged scheme of the organization of construction. Physico-mechanical characteristics of the soils are necessary for the design of such passages using which it is possible to perform calculations using approved soil models. During civil engineering processes on weak soils, it is also important to preserve geological diversity, which is possible with a comprehensive assessment of soil properties. Work on weak soils, even at the survey stage, is associated with accessibility problems due to their low bearing capacity. Usually travel by transport on such soils in warm season is impossible. Evaluation of the physico-mechanical properties of weak soils is possible using lightweight portable devices that can be delivered to the testing sites manually. This paper presents the results of the evaluation of the mechanical characteristics of weak soil using lightweight portable devices such as probe penetrometer, vane shear meter, and dynamic density meters. Soil properties obtained during field tests can be used as input parameters for design models, the use of which allows to perform immediate out calculations temporary road construction or the base for the construction mechanism. Works performed according to the proposed method are of low laboriousness, low cost and high efficiency, do not require the use of mechanisms and can be performed by one person.